Sains Malaysiana 51(11)(2022): 3843-3855

http://doi.org/10.17576/jsm-2022-5111-27

Rafflesia tunku-azizahiae (Rafflesiaceae), a New Species from Pahang, Malaysia

(Rafflesia tunku-azizahiae (Rafflesiaceae), Spesies Baharu dari Pahang, Malaysia)

JUMAAT H. ADAM¹, MOHD. AFIQ AIZAT-JUHARI^1,*, NIK NADIRA-FARHANA NIK ARIFF¹, SHAMSUL KHAMIS^1,2  MOHD. HIZAMRI MOHD. YASIN³ & KIEW-LIAN WAN²

¹Fraser’s Hill Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

²Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

³Pahang Forestry Department, Level 5, Kompleks Tun Razak, Bandar Indera Mahkota, 25990 Kuantan, Pahang Darul Makmur, Malaysia

Received: 29 March 2022/Accepted: 4 November 2022

Abstract

A new species of Rafflesia (Rafflesiaceae) from Mt. Benom Forest Reserve, Ulu Dong, Raub, Pahang, Rafflesia tunku-azizahiae Adam, Aizat-Juhari & Wan is described and illustrated. Cluster analysis and principal component analysis showed that R. tunku-azizahiae and R. tuanku-halimii are closely related morphologically, characterized by perigone lobes covered by rows of very closely spaced coalesced white warts, and windows wholly covered by very closely rings of coalesced white warts. Score plot and bi-plot showed that R. tunku-azizahiae differs from R. tuanku-halimii by larger flower diameter, broader diaphragm and disc diameter, larger aperture diameter and longer ramenta.

Keywords: Cluster analysis; Peninsular Malaysia; principal component analysis; Rafflesia; taxonomy; Tetrastigma

Abstrak

Suatu spesies baharu Rafflesia (Rafflesiaceae), dari Hutan Simpan Gunung Benom, Ulu Dong, Raub, Pahang, Rafflesia tunku-azizahiae Adam, Aizat-Juhari & Wan telah dihurai dan diilustrasikan. Analisis kelompok dan analisis komponen utama menunjukkan R. tunku-azizahiae dan R. tuanku-halimii mempunyai pertalian morfologi yang rapat; dua spesies tersebut mempunyai barisan bintil putih yang rapat bersambung pada permukaan cuping perigon dan seluruh tetingkap ditutupi oleh lingkaran tersusun rapat oleh bintil putih bersambung. Plot skor dan plot bi menunjukkan R. tunku-azizahiae berbeza daripada R. tuanku-halimii dengan saiz diameter bunga yang lebih besar, diameter diafragma dan cakera yang lebih lebar, diameter apertur yang lebih besar dan ramenta yang lebih panjang.

Kata kunci: Analisis kelompok; analisis komponen utama; Rafflesia; Semenanjung Malaysia; taksonomi; Tetrastigma

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^*Corresponding author; email: afiqaizat@ukm.edu.my